Machine for making paper container bodies and the like



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J. T. BOND MACHINE FOR MAKING PAPER CONTAINER BODIES AND THE LIKE Dan. 18, 1923.

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J. T. BOND MACHINE FOR MAKING PAPER CONTAINER BODIES AND THE LIKE Original iled June 13 18,1923. J T BOND W W MACHINE FOR MAKING PAPER CONTAINER BODIES AND THE LIKE Original Filed June 13, 3921 6 Sheets-Sheet 5 Dec. 18, 1923.

J. T. EQND MACHINE FOR MAKING PAPER CONTAINER BODIES AND THE LIKE Original Filed June 13. 1921 6 Sheets-Sheet 4;

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J. T. BOND MACHINE FOR MAKING PAPER CONTAINER- BODIES AND THE LIKE Original Filed June 15, 1.921 5 fihGGCS Sl'WQT; 5

a a Wu .5; W0 67 Dec. 18,1923. miw a J. T. BOND MACHINE FOR MAKING ?APER CONTAINER BODIES AND THE LIKE g n l led June 13. 1921, 6 Sheets -sheet 6 JWBWZ;

Patent Dec l8, 19123 TES time

JOSEPH T. BOND, OF PHOENIX, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO OSWEGO FALLS CORPORATION, OF FULTON, NEW YORK, A CORPORATION OF NEW YORK.

MACHINE FOR MAKING PAPER CONTAINER BODIES AND THE LIKE.

Application filed .Tune 13, 1921, Serial No. 477,215. Renewed November 2, 1923.

i T all'wizom it may-concern.

Be it known that I, JosnrH T. BOND,

a citizen of the United States of America,

and resident of Phoenix, Oswego County, State of New York, have invented certain new and'useful Improvements in and Relating to Machines for Making Paper Container Bodies and the like, of which the following is a specification.

This invention relates to certain improve.- ments in and relating to machines for making paper container bodies; and the objects and nature of the invention will be readily understood by those skilled in the art in the" light of the following explanation of the accompanying drawings illustrating what I now believe to be the preferred mechanical expression or embodiment of my invention from among other forms, constructions and arrangements within the spirit and scope thereof.

This invention is characterized by mechanisms designed to fold a paper or like material blank around a mandrel, in a novel manner and by novel means, and cause the ends of said'blank (one of which is usually supplied with adhesive) to over-lap to form a longitudinal seam uniting the ends of the blank that is shaped to constitute the body,

and the particular example illustrated is also characterized by means to maintain the application of pressure on said adhering overlapped ends for an extended length of time for the purpose of perfecting said seam and rendering the same permanent.

An object of the invention is'to provide means for folding the body forming blank on the mandrel by reciprocatory means movable longitudinally of the mandrel as distinguished frpm the swinging folders or wipers heretofore employed in pairs to press the blanks around the mandrels.

A further object of the invention is to provide certain improvements in mechanisms for forming tapered container bodies. With these and other objects in view my invention consists in certain novel features in construction, "and in combinations as more full and particularly set forth and specified hereinafter. 1

Referring to the accompanying drawings: Fig. 1 shows an embodiment of my pres ent invention, partially in side elevation and partially in vertical section, portions of the machine being broken away and not shown. Fig. 2 is a horizontal section on the line 2-2, Fig. 1, portions of the machine being broken away and not shown.

Fig. 3 is a vertical-section on the line 3--3, Fig. 2, port-ions of the machine not being shown, a folded blank being shown in section on the left hand mandrel and a conical can in section on the right hand mandrel, the mandrels and their presser devices intervening between said two mandrels, not being shown.

Fig. 4 is a detail elevation of the forming hood and its supporting structure and operating parts with a mandrel below the hood, the hood being shown in withdrawn position. i

Fig. 5 is a detail vertical section of the forming hood taken on the line 5-5, Fig. 7.

Fig. 6 is a detail side elevation of said hood.

Fig. 7 is a detail cross section of the hood taken on the line 77, Fig. 6,a fo ded can body blank being shown in the hood in cross section.

Figs. 8, 9, and 10 are detail views of one of the presser device units.

Fig. 11 is a view of a tapered can such as formed by the machine disclosed.

The machine of this invention provides a mandrel 1, on and around which the paper or other material blank (such as a) is bent or pressed to cause its ends to overlap in the formation of the permanent longitudinal seam (b) of the container body, such as c.

In the particular example illustrated, I

show mechanism for producing a tapered against which the edge of the large end of the container body rests when formed on the mandrel from said blank.

Any suitable means is provided to apply a flat blank to the mandrel with its long edge resting 011 shoulder or ledge 1 at a point midway the length of said edge and to thus hold the blank to the mandrel along a line longitudinally of the mandrel and approximatel centrally between the ends of the flat b ank so that the flat blank is arranged ap roximately tangentially of the surface of t e mandrel projecting laterally therefrom about. equal distances in opposite directions. One end portion of the blank is supplied with any suitable adhesive before the blank is bent around the mandrel to cause its ends to overlap and form the longitudinal seam of the container body. The adhesive is applied to the end of the blank that is to form the outer ply or end of the seam, usually before the blank is applied to the mandrel.

I show a clamp for holding the blank along its center line, to the mandrel in position to be bent or folded around the mandrel. In the particular example illustrated, this clamp embodies a straight blade 2 formed to engage the blank and hold the same pressed to the mandrel. This blade when in clamping position is arranged longitudinally of the mandrel and engages the blank preferably throughout its full length longitudinally of the mandrel. This blade is arranged at the free end of an arm 2 to which it is fixed. This arm, in this example, is swingable vertically on a-suitable axis 2", to carry the blade to and from clamping or operative position with respect to the mandrel. The arm can be operated in any suitable manner or by any suitable means, although as hereinafter explained in this particular example, I provide power operated timed mechanisms for periodically operating said clamp, although I do not wish to so limit all featuresof my invention.

I provide means movable longitudinally of the mandrel in a path alined with the longitudinal axis thereof for bending the blank held by the clamp, around and against- I the mandrel. This blank bending or forming and pressmg device, is normally alined with and arranged opposite and spaced a distance from the free or small end of the mandrel, and on its operative stroke moves toward the mandrel and engages the projecting portions of the blank at opposite sides of the clam and as it moves over the blank toward the base of the mandrel, the blank is wiped or bentaround the mandrel and the ends of the blank are caused to overlap and the blank is ressed snugly to and against the mandrel.

resser means is thereupon applied to the overlapping blank ends (the seam of the pressed to form on the mandrel with the:

blank ends overlapping and approximately united by the adhesive previously applied to one of said ends, a suitable presser device is brought into position to exteriorly apply pressure against the seam formed by the overlapping ends and to maintain said pressure for a sul'i'icient length of time to approximately assure the formation of a liquid tight permanent seam or union between the overlapping blank ends.

The pressure is applied to the seam of the formed body while the body is enveloped and held by the shaping or forming device and preferably maintains its operative position pressing said seam after said device has withdrawn from the body and returned to withdrawn position.-

In the particular example illustrated, the forming or shaping device embodies a reciprocatory hollow head orhood :"rhaving its longitudinal axis and path of movement alined with the longitudinal axis of the mandrel. The open or free end of this hood. is spaced a distance from and arranged op; posite the small or free end of the mandrel, when the hood is in withdrawn or inopera; tive position, so as to afford ample room for the application of and clamping the flat 5 in the rear side oi the hood to receive the clamping bar 2, and the other 5 in the front side of. the skirt to receive the seam presser hereinbefore referred to. This hood is shaped and formed to interiorly conform approximately to the exterior conformation of the mandrel and to press the blank more or less tightly against the exterior of the mandrel throughout the mandrel length above the blank stop ledge ,1, while the in terior of the hood exceeds the length of the mandrel so that the closed end 5 of the hood is located a substantial distance from the free end of themandrel when the hood is at the limit of its operative stroke and rat/aces completely enclosing the mandrel and the blank thereon, to permit projection of the blank and body formed therefrom beyond the free end of the mandrel. The skirt of the hood (which is usually circular in cross section) longitudinally fiares outwardly towards the free or open end of the hood, and the free or outer end edge of said skirt is preferably transversely rounded or beveled to freely ride on the top edge of the blank and guide the same into the hood.

The free end 5 of the hood is inclined transversely from the rear side of the skirt upwardly and forwardly to the front side of the skirt so that the depth (length) of the hood skirt gradually decreases at both sides of the skirt (the two skirt sides are defined by the slots 5*, 5) from the slot 5 to the slot 5.

By reason of this inclined edge formation, as the hood moves on its operative stroke, the projecting end portion of the hood at the rear side of the hood, will first engage the flat paper blank held to the mandrel by the clamp 2. This projecting portion or lip of the hood at opposite sides of the slot 5 will ride down on the center outer edge portion of the blank and pass down outside of the blank and thus initiate the move ments ofthe opposite ends of the blank toward each other and around the mandrel.

The said portion of the lower end of the hood engages the central outer portion of the blank at opposite sides of the clamp 2 -and the taper of the inner surface of the hood and the upward and forward inclina- .tion ofthe hood end, as the hood moves onto the mandrel, gradually wi e or bend the blank ends or wings smoot ly around the mandrel, and the hood when it completes its stroke, encircles the blank and presses the same against the mandrel. The front side of the hood is formed to force one free end of the blank to the mandrel, ahead of the other free end, the last named free end having the wet or soft adhesive on what is then its inner side surface, so that the surface having the adhesive will close in against and overlie the outer surface of the other free end of the blank to form the longitudinal seam of the container body.

To accomplish this result, of bringing one free end of the blank to the mandrel ahead of the other, I provide the front side of the hood, along one edge of the slot 5, with a longitudinal approximately-radially yielding lip normally pressing inwardly beyond the circle of the interior of the hood. This lip is formed by a longitudinal wing 5', swingable on longitudinal axis 5 whereby the wing is hinged or pivotally united to one side or section of the hood skirt. This wing forms one edge wallof the slot 5 of the hood, and is formed with the curved inner blank engaging surface 5. The wing is moves onto the mandrel, on its operativestroke, the yielding surface 5 will engage the non-adhesived free end of the blank before the front fixed edge portion of the hood skirt engatges the adhesived free end of the blank, an will hence press the first named "free end inwardly a greater distance than and ahead of the adhesived free end. As the hood moves on its operative stroke, the yielding surface 5 will press the free blank end thereunder, against the mandrel, and the wing 5 will be swung outwardly against the tension of its springs, as the mandrel completes its operative stroke and the fixed surfaces of the hood begin to press the formed blank on the mandrel. As the wing is thus pressed outwardly, the blank end thereunder is allowed to swing out to normal position and into engagement with the adhesived inner surface of the other and overlying blank end.

Any suitable means can be provided for supporting and reciprocating the forming hood, although in the specific example illustrated, ll show a vertically arranged hood cooperating with an upwardly projecting mandrel. I do not, however, wish to so limit my invention as it is obvious that these parts might be otherwise arranged than vertical. In this example, I show an upright framework 7 carrying a horizontal rotary crank shaft 8 and providing vertical guide ways 7 for a vertically reciprocatory cross head 7* to the lower end of which the depending hood 5 is rigidly clamped by bolt 7 (01' any other suitable means) entering the closed top end 5. The head and hood are reciprocat-ed from the crank of shaft 8, through the medium of pitman 7 preferably having ball and socket or other universal ioint connection with the cross head. The pitman 7 ispreferably adjustable in length through the medium of screw threaded connection 7 to secure the desired adjustment of the hood with respect to the mandrel and to suit various conditions of work and other requirements.

The crank shaft 8 in this instance, is driven from a main horizontal drive shaft 9, through the medium of a vertical shaft 7 geared to the main shaft and to the crank shaft, approximately as shown.

In the specific example illustrated, although I do not wish to so limit all features of my invention, it provide a series of mandrels 1, and means whereby the mandrels are successively brought into operative relation with respect to the shaping hood and the blank clamp, and thereafter are brought successively into operative rellti lation with respect to means for securing bottoms or closures to the upper ends of the container bodies While such bodies are located on the mandrels on which they were formed. For instance, I show a horizontal rotary table 10, .mounted and rotatable on a suitable support 11 carried by the machine framework 12.

The mandrels 1 are fixed on and project upwardly from said table and are uniformly spaced in a circle on the table so as to successively pass under the hood and under a spinning head 13 or other suitable means for closing the ends of the bodies.

This table is rotated step by step by any suitable driving transmission from the main shaft 9 so that at each feeding movement or step of the table, a mandrel will be brought to rest under the hood and another mandrel will be brought to rest-under said spinning head 13. 7 Suitable mechanism is'provided for holding the table at rest for the proper length of time while the hood and spinning heads are performing their functions.

As soon as a blank has been shaped on the mandrel below the hood to form a body, the table makes a step to move forward the mandrel carrying said body, and to bring another mandrel to position under the then withdrawn hood. As soon as the table comes to rest, a flat blank having adhesive applied thereto, is applied in any suitable manner to the rear side of the mandrel by the clamp 2 or in any other suitable manner and is held by said clamp.

After each forward step of the table, the the clamp Q is swung up and forwardly to clamping position with respect to the mandrel under the hood.

Various means can be provided for applying and withdrawing the clamp and for timing the movements thereof. For instance, I show the axis or fulcrum 2" of the clamp arm 25 mounted in the machine frame 12 outwardly beyond the table and mandrel blank-receiving position and this axis is provided with a concentric gear wheel 2 fixed with respect to the clamp arm. This gear is rotated to rock the clamp arm by a toothed sector 2 on the end of lever 2" fulcrumed between its ends in the frame and at its other end having connecting rod connection 2 with lever 2 fulcrumed in the frame and at its free end having a roller 2 bearin on the periphery of rotary cam 2, on sha t 2 geared to and driven by the main drive shaft 9.

This camcontrols the movements of the clamp and holds the clamp in operative position with respect to each mandrel and in timed relation with respect to other mechanisms.

One blank clamp is provided, and the mandrels are successively brought into 013- erative position with respect to this. clamp.

However each mandrel is provided with its own seam pressing device, and these devices are mounted on the table within the device comprises an upright plate or'blade 15 radially and edgewise arranged with respect to the table and its respective mandrel, and confined to slide edgewise in a path of movement radially of the table and mandrel axis and alined withtheslot 5 of the W hood (when on the mandrel) and consequently alined with the seam portion of the container body when located on the mandrel.

I provide a suitable housing 16 for the blade and this housing confines the blade in.

its hereinbefore described path of movement so that the straight longitudinal edge 15 of the blade adjacent tothe mandrel can enter slot 5 and exert the required pressure against the overlapping ends of the body blank approximately throughout the length of the mandrel. The housings 16 are fixed to and rise from the'table inwardly of the table withrespect to the mandrels. Each presser blade is yieldingly and normally old in withdrawn or inoperative position, by any suitable means, Forinstance, I show each blade equipped with a stud 17 {projecting from its front (inner). edge through a bore or opening in the housing and a coiled expansive spring 18 on said stud and within I said bore and compressed between a ledge of the housing and a shoulder on the stud to constantly exert its tension in holding the blade. forwardly away from the mandrel with which it cooperates.

Each presser blade is provided with means for projecting the same rearwardly to opcrat ive'seam pressing position and for maintaining the same in such position, independently of the remaining presser blades. For instance, I show each blade proviided with a verticaly swingable angle or bell crank lever 19 arranged at the front (inner) side of the blade housing and at its angle fulcrumed in the housing. The upright-arm of this lever 19 is arranged opposite the exposed end of the blade stud l7 anda com pression coiled spring 20 forms an operative connection between the blade and said upright end of the lever. I show the stud formed with a socket longitudinally receiving the spring with one end of the spring seated against the floor of the socket. The exposed end of the spring is confined to the upright end of the lever.

When the lever is swung to move its upter aces right end toward the blade stud, the spring 20 is compressed and thereby serves to force the blade on its operative stroke, when the com ression of spring 20 under the pressure of t e lever, exceeds the power of blade retract-ing spring 18. The spring 20 hence serves to yieldingly hold the bladein operative seam pressing position and avoid shocks and take up inequalities. When the pressure of lever 19 on the spring 20 is relieved, the spring 18 will retract the blade from operative position.

The lever 19 is formed with a horizontal arm projecting toward the axis of the table and at its free extremity this horizontal arm is preferably equipped with a roller 19 overhanging the upper end of a vertical fixed journal or post 21constituting the vertical axis around whichthe table rotates. This post 21 is fixed to the framework in any suitable manner, and at its upper end is provided with a cam track 22 on which the rollers 19 travel and to which said rollers are held by the springs :20. This track has an elevated portion to hold u the'horizontal endsof the levers 19- w ose rollers are thereon and consequently to hold the presserblades controlled by said levers in. operative position. The track terminates in a depressed portion to permit the horizontal arms of the levers 19 to drop as their rollers reach said depressed portion, and consequently to permit the blades controlled by said rollers, to retract. The presser blades can be controlled by the track 22 throughout the entire circular path of movement of each mandrel, except when each mandrel is at the blank receiving and body forming position.

The depressed portion of the track terminates opposite (in front of) the mandrel blank receiving position. When each mandrel comes to rest at this position under the hood, the presser blade of said mandrel must. be in withdrawn position and hence the horizontal arm of lever 19 of said blade must be at its limit of downward position. The blade must remain thus withdrawn until the hood has completed its operative stroke and completed its functions in forming the body on the mandrel. Then, the presser blade must perform its operative stroke to compress the body seam, while the mandrel is still at rest within the hood.

I hence provide means for elevating the horizontal arm of the lever 19 of the presser blade that belongs to the mandrel at the blank receiving position, at the proper instant with respect to the operation of the hood. In the example illustrated. I show a break in the cam track immediately under theroller 19 of the blade that belongs to the mandrel in blank receiving position with the depressed end of the track terminating at said break and the elevated end of the track beginning at said break. The break is occupied by a vertically movable or elevator track section 25. This track section is carried by and mounted on the upper end of a spring'depressed vertical plunger 26, slidable vertically through the fixed axis of the table and at its lower end yieldingly held in engagement with the periphery of cam 27 fixed on rotary cross shaft 28 suitably geared to and rotated in timed relation by the main drive shaft 9.

The cam 27 is so formed and so timed in its rotation with respect to the movements of the hood and table, that each presser blade is withdrawn when its mandrel reaches the blank receiving position and thus remains until the body has been formed on the mandrel, whereupon the cam elevates the track 25 under roller 19 and rocks lever 19 to throw the presser blade to operative position and to there hold the presser blade while the table starts on the next forward feedstroke or step which carries the particular roller 19 from the elevated track section onto.the elevated portion of the fixed track. When the particular roller .19 has passed from the elevated track section, the cam permits the plunger to drop and thus depress said track section before the following mandrel reaches blank receiving position. 1

The elevated part of the track extends throughout the greater portion of the circular path in which the rollers 19 travel as it is desirable to maintain the pressure 01' the presser blades on the body seams as long as possible to assure the formation of flat tight permanent seams. It is also desirable to 'maintain the presser blades tightly against said seams while the spinning head.

is acting on the bodies in applying or securing closures therein or thereto, inasmuch as the presser blades then serve to hold the bodies clamped to the mandrels and against rotation during the spinning or crimping operation. After each mandrel has moved beyond the spinning head and has almost completed acomplete revolution, the presser bar is withdrawn and the completed body is removed from the mandrel by hand, by an air blast or in any other suitable manner.-

Tn the machine illustrated, the upper end of each mandrel provides a die or face to cooperate with the spinning head in securing a closure in the container body carried by.the mandrel. Thus the closure is secured to the container body while that body remains on the mandrel on which it was formed. To permit this, the container body is so formed on the mandrel that the upper end of the body projects a substantial dis tance upwardly from the mandrel. As the table carries each formed body step by step able closure disks in the upwardl projected ends of the bodies. As each b0 y comes to rest under the spinning head, that head descends and crimps or spins down the projecting end of the body to secure the closure and complete the container bottom.

This crimpin or spinning operation of the bodies on the mandrels, renders it desirable for the presser blades 15 to terminate at their upper ends approximately in or below the levels of the top die faces of the mandrels, so as to be out of the way of the crimpin or spinning head when operating on the bodies to secure the closures. The projection of the formed blanks above the mandrels renders it desirable, however, to press the seams of said projected ends to assure the proper union of the upper parts of the overlapping blank ends.

To attain this result, I provide each blade with an auxiliary seam presser device, that can be withdrawnout of the way of the spinning or crimping head without disturbing the presser blade which remains in operative position during the crimping operation.

In the specific example illustrated, I provide each housing 16 with a presser pin 30 longitudinally slidable and arranged radially of the table and immediately above the presser blade of said housing and having its end arranged to engage and press the seam of the upwardly projected portion of the body on the mandrel the same as the blade presses the portion of the seam that is backed by the mandrel. This pin 30 is constantly pressed toward operative position by coiled sprin 31 and is withdrawn with and by the bla e through the medium of engaging portions 32 of the blade and pin, and yet can be Withdrawn independently of the lade when the blade is in operative position. Theblade controlling spring is sufficiently powerful to withdraw the pin with the blade and to hold the pin withdrawn when the blade is in withdrawn position.

Any suitable means can be provided to withdraw the auxiliary presser devices (pins 30) as their mandrels reach closure securing position below the crimping or spinning head. For instance, this can be accomplished by providing each presser pin 30 with an upright pin 33 to engage a cam 34, fixed on the machine framev work just in-advance of the crimping head.

The arrangement is such that each pin 38 will ride on cam 34 as its mandrel reaches crunplng position and the auxiliary presser device will be thereby held withdrawn until after the crimping head has performed its operation and withdrawn. The spinning or crimp ng head can be of any suitable construction and formation to perform the functions desired and can be operated and timed in its movements by any suitable means although usually operated through suitable transmission from the drive shaft 9.

In the example illustrated, I provide a rotary crimping or spinning head 13 that is normally elevated from operative position and at opposite sides of the clamp member 2 which in effect, forms'the central finger of said rack. These various fingers are carried by the arm or bracket 2*, and the arm and finger are so formed and arranged'as to receive the horizontal fiat blank a (dotted line Fig. 2) and then swing to up-end said blank, i'. e. deliver the blank against the mandrel in an upright position. This rack assumes a horizontal position, a distance in advance of the mandrel, to receive the horizontal flat blank, a. This blank then rests horizontally on top-of the rack fingers with the long convex edge of the blank against the stop or gage pins 2". The blanks can be placed one at a time on the rack when in receiving position by hand or by any suitable feeding mechanism properly timed in rela; tion to the movements of the rack'and othei' parts of the machine.

Just before the mandrel successively reach the crimping station (below crimping. head 13), in the endless circuit in which they travel, the mandrels successively stop at the bottom closure receiving station 40. At this station a closure 7 is placed on the upper 195 end of the mandrel and in the projecting upper end of the folded blank. The closures can be inserted in the. folded bodies at the station 40 b hand or by suitable closure forming an shown in drawings). r

The index or mandrel feed table 10, can be advanced stepby step and controlled in its movements, if so desired, by the continuously rotating barrel cam 50, having a spiral groove 51 to successively receive and advance the rollers 52 carried by studs secured to and depending from the table. The rollers 52 are uniformly spaced and arranged in a circle and pass in succession into the cam groove 51, While the length of the cam and the end formations thereof are such as to cooperate with the rollers to lock the table during the intervals between the steps forward,- and to then advance the table'on its steps forward, accurately and in timed relationto other mechanisms hereinbefore described.

It is evident that various changes, modifications. and variations might be resorted delivering mechanism (not from the same to fold a free end fiat blank around the mandrel with its ends overlapping to form a seam.

2. A mandrel having a clamp a flat blank at its central portion against the mandrel, and a former reciprocatory in a path longitudinally of the mandrel to fold the blank around the mandrelwith its ends overlapping, in combination with means for ressing said overlappin 3. In corn ination, a free end man rel for use in forming container bodies having a longitudinal seam from fiat paper material blanks and the like, and a device movable longitudinally of said mandrel and to and from. the free end thereof to fold a blank around the mandrel with the blank ends overlappin to form the body and to press the folded blank to the mandrel.

4. In combination, a mandrel for use in forming a paper container body having a longitudinal seam from a Hat blank, means for holding the fiat blank against the side .of the mandrel with the blank projecting therefrom in opposite directions, means movable longitudinally over the mandrel for engaging the opposite portions of the blank and gradually wiping the same toward each other and around the mandrel and a presser for forcing together the overlapping ends of the blank.

5. In combination, a mandrel for use in forming a paper container body having a longitudinal seam, and means movable longitudinally of said mandrel to initially on gage the central portion of a flat blank held at its center part against the mandrel side and move onto the blank and gradually wipe the blank around the mandrel with the blank ends overlapping to form the seam.

6. In combination, a mandrel for use in forming a fiat blank into a paper container body having a longitudinal seam, means for initially engaging the opposite central portions of a flat blank held at its center to the side of the mandrel and projecting in opposite directions therefrom, a former movable longitudinally over and from the mandrel for gradually wipingsaid opposite portions toward each other and around the mandrel free end, means to ends.

blank secured together forming a longitudinal seam, said means comprising a reciprocatory former and cooperating means, said former being reciprocatory longitudinally of the finally formed tubular body.

8. Mechanism for folding a flat blank to form a tubulanbody with its ends overla ping and provid ng a seam longitudinally of the body, sald mechanism comprising means for engaging the central portion of the flat blank and gradually wiping the ends thereof toward each other in such manner that the extremities of said ends can be caused to overlap and be secured together, sa d means being movable longitudinally of said blank in performing its functions, and means to cooperate with said first mentioned means in the formation of the tubular body.

9. Mechanism for folding a fiat blank to 'form atubular body with its ends overlapping and providing a seam longitudinally of the bod said mechanism comprising longitudlnal y-reciprocatory means for engagingthe central portion of the flat blank and gradually wiping the ends thereof toward each other in such manner that the extremities of said ends can be caused to overla and be secured together, said means being movable longitudinally of said blank in performing its functions, and means to cooperate with said first mentioned means in the formation of the tubular body.

10. Mechanism for folding fiat blanks to form tubular bodies wherein the ends of the blanks are secured together to form longitudinal seams, comprising means for holding the blank at its central longitudinal portion, means for acting on the overlapping blank ends to complete the seam, and a longitudinally-reciprocatory former to fold the blank into tubular form with its ends overlapping.

11. In combination, a mandrel, means to temporarily hold a fiat blank against the mandrel, means reciprocatory longitudinally of and to and from. the blank to fold the same around the mandrel with the blank ends overlapping, and means to hold the overlapping blank ends together.

12. In combination, a mandrel, means to temporarily hold a flat blank against the mandrel, means reciprocatory longitudinally of and to and from the blank to fold the same around the mandrel with the blank ends overlapping, and means to hold the overlapping blank ends together after said reciprocatory means has withdrawn longitudinally from said folded blank and the mandrel.

13. In combination, a longitudinally reciprocatory former having an inclined wiping edge arranged to engage the central porv 7 means in the formation of said tubular 7 body.

14:. In combination, a longitudinally reciprocatory former having an inclined wiping edge arran ed to engage the central portions of a flat blank and move longitudinally of said blank and fold the free ends thereof ztions of a fiat blank and move longitudinally of said blank and fold the free ends thereof toward each other to form a tubular body, and means for cooperating with sand means in the formation of said tubular body, said former beingiii' the form of an open end hood having a yieldingly held wing or edge portion to press one end of the blank in ahead of the other blank end.

16. In combination, means on which to form a tubular body, a device to hold a fiat blank against said means so that the blank can be bent into tubular form on said means with the blank ends overlapping to form a longitudinal seam, aformcr topress said blank into tubular form on said means, a presser to apply pressure to said seam while said former holds the blank in tubular form and for a substantial lengthof time after said former has withdrawn from said tubular body, opera-ting devices for applying and withdrawing said former, means for applying an end closure to said tubular body, and means for operating and controlling said presser to attain said long continued pressure on said seam while said closure is being applied.

17. In combination, means on which a fiat blank is folded to tubular form with the ends of the blank overlapping and secured to form a longitudinal seam, a periodically movable device for receiving a fiat blank in substantially horizontal position and delivering the same to and holding the same at said means in substantially upright position, and mechanism for acting on the blank while thus held by said device to fold the blank into tubular form on said means.

18. In combination, means on which a flat blank is folded to tubular form with the ends of the blank overlapping and secured to form a longitudinal seam, a periodically movable device for receiving a fiat blank in substantially horizontal position and delivering the same to and holding the same at said means in substantially upright position, and a reciprocating former for acting on the blank while thus held by said device to fold the blank into tubular form on said means.

19. In combination, a mandrel, a periodically movable device for receiving and holding a fiat blank and delivering the same to and clamping the same against said mandrel, and forming means arranged to engage the blank while thus held and fold the same around the mandrel with its ends overlap- ,ping to form a tubular body having a lonblanks held by said rack at folding position to form the blanks. into tubular bodies with the blank ends overlapping to form longitudinal seams, said device being periodically movable on operative and return strokes, means for cooperating with said device in the formation of said tubular bodies, and operatin mechanism for timing the movements of said rackand device.

21. In combination, a series of mandrels,

means for successively presenting said mandrels at the blank receiving and tubular body forming position and for successively mow, ing the same therefrom with the tubular, bodies thereon, means for holding a flat blank to each mandrel at said position, forming device for folding said blank on the mandrel at said position into tubular form with the blank ends overlapping, and a series of pressers, one for each mandrel and moving therewith, each presser arranged to apply pressure to the seam of the tubular body formed on its member and to continue such pressure after its mandrel has left said position.

22. In combination, means to fold a flat blank into tubular form with its ends overlapping, a presser to apply pressure to said overlapped ends while said means is holding said blank in tubular form and to maintain said pressure on the seam for a substantial length of time after the withdrawal of said means from the tubular body, and a device to cooperate with said means and presser in the formation of the tubular body and its seam, said device being movable to and from operative relation with said means. said presser moving with said device to continue the pressure on said seam.

23. Mechanism for folding a flat blank to form a tubular body with the ends of the blank secured together forming a longitudi nal seam, said means comprising a reciprooatory former and cooperating means, said former being reciprocatory longitudinally of the finally formed tubular body, said former former being reciprocatory l0 constructed to press one it ahead of the other in the formation of the seam composed of secured overlapping blank ends.

inclined wiping edge said former constructed to press one en Mechanism for folding a fiat blank to form a tubular body with the ends of the blank secured together forming a longitudinal seam, said seams comprising a reciprocatory former and cooperating means, said former being reciprocatory longitudi nally of the finally formed tubular body. said former constructed to press one end of the blank in ahead of the other in the formation of the seam composed of secured overlapping blank ends, said former being of hood formation with an open end having Walls. 26. Mechanism for fdlding a flat blank to form a tubular body with the ends of the blank secured together forming a longitudinal seam, said means comprising a reciprocatory former and cooperating means, said former being reciprocatory longitudinally of the finally formed tubular bgdyf.

0 the blank in ahead-of the other in the formation of the seam composed of secured overlapping blank ends, said former being of hood formation with an open end having inclined wiping edge walls, said hood being centrally and longitudinally divided.

'27. Mechanism for folding a flat blank to form a tubular body with the ends of the blank secured together forming a longitudinal seam, said means comprising a reciprocatory former and cooperating means, said former being reciprocatory longitudinally of the finally formed tubular body, said former constructed to press one end of the blank in ahead of the other in the formation of the seam composed of secured overlapping blank ends, said former being of hood formation with an open end having inclined wiping edge Walls, a fiat blank clamp, and a tubular body seam presser, said hood being longitudinally divided to receive said clamp and presser.

28. Mechanism for folding a fiat blank to form a tubular'body with the ends of the blank secured together forming a longitudinal seam, said means comprising a reciprocatory former and cooperating means, said former being reciprocatory longitudinally of the finally formed tubular body, said former its operative comprising an open end hood and a reciprocatory head carrying and operating the same.

29. Mechanism for folding a flat blank to form a tubular body with the ends of the blank secured together forming a longitu? dinal seam, said means comprising a reciprocatory former and cooperating means, said former being reciprocatory longitudinally of the finally formed tubular body,

said former comprising an open end hood, a

reciprocatory slide to which said hood is normally fixed, and eccentric operating means having pivotal adjustable operative connection with said slide.

30. In combination, a mandrel, and an open-end hood-like former alined with the longitudinal axis of the mandrel and longitudinally-movable over and from the same, the open end of said former providing oblique wiping edges inclined from one side of the former to the other transversely thereof.

31. In combination, an open-end hoodlike former longitudinally reciprocatory on its operative and return strokes, a series of mandrels. means for moving said mandrels in an endless circuit and for bringing them successively to rest opposite the open end'o'f said former and longitudinally alined therewith, means for holding a fiat blank with its centralportion against and longitudinally of the mandrel opposite said former while said former is withdrawn, said former on stroke moving over said mandrel and being shaped to fold and wipe such blank into tubular form on the mandrel with the blank ends overlapping, and means moving with the mandrels to apply pressure to said overlapped ends and to maintain such pressure thereon after the mandrels have traveled beyond said former.

32. In combination, a series of mandrels, a periodically movable former, a periodically movable closure securing head, a carrier for said mandrels movable in an endless path to bring the mandrels successively to a tubular body forming position opposite said former and thereafter to the closure securing position opposite said head, means at said body forming position for holding flat blanks against the mandrel in position for the former to fold the same into tubular form on the mandrel with the blank ends overlapping, and a series of blank end pressing devices carried by said carrier and cooperating and moving with the mandrels.

33. In combination, a rotary table having a. step by step feed, a series of mandrels mounted on t 8 table, a series of movable pressers on the table, one for each mandrel, means arranged to hold a Hat blank by its central portion against the mandrel at body forming position, periodically movable means mounted independently of the table for folding such blank around the mandrel at 'body forming position with the blank ends overlapping, and means for automatically applying each presser to the overlapped ends of the blank on its mandrel at ends overlapping, and-means for automatically applying each presser to the overlapped ends of the blank on its mandrel at the body forming position and for automatically releasing each presser before its mandrel again reaches said position, said last mentioned means embodying a cam track having different elevations, each presser having a controlling device traveling on said track, and an elevator for lifting said devices from the low end of said track to the' high end thereof. p

35. In combination, aseries of mandrels, means for 'SIICCGSSIVBIY presenting said mandrels at .the blank receiving and tubular body forming position and for successively moving the same therefrom with the tubular bodies thereon, means for holding a flatv blank to each mandrel at said position, a forming device for folding said blank on the mandrel at said position into tubular form with the blank ends overlapping, and a series of pressers, one for eachmandrel, and moving therewith, each presser arranged to apply pressure to the seam of the tubular body formedon its member and to continue such pressure after its mandrel has left said position, said pressers being springpresscd and having controlling members, and an endless track controlling and on which said members travel.

36. In combination, means to fold a flat blank into tubular form with its ends overlapping, a presser to apply pressure to said overlapped ends while said means is holding said blank in tubular form and to maintain said pressure on the seam for a substantial length of time after the withdrawal of said means from the tubular body, and a device to cooperate with said means and presser in the formation of the tubular body and its seam, said means and device being constructed and arranged to forn'i said tubular body with a projecting end and said presser embodying an auxiliary presser tion of member to press the overlapping blank ends of said projecting end.

37. In combination, means to fold a fiat blank into tubular form with its ends over lapping, means to secure a closureto the pro jecting end of said tubular body, a presser to apply pressure to saidoverlapping ends while said means 1S holding said blank in tubular form and to maintain said pressureon the seam until after the withdrawal of said means from the tubular body and the 7g closure has been secured thereto, and a device to cooperate with said means and presser 1n the formation of the tubular body and its seam. 1

38. In combination, means to successively fold flat blanks into tubular bodies wherein the blank ends overlap to hold said bodies each with a projecting end for the application of a closure thereto, means for securing closures to said ends, means for sucindependently movable presser member to engage said body end, controlling mechanism for said pressers, and means for independently withdrawing theauxiliary mem-- ber of each presser to permit the closure seoperation on the end of the body encurin gage by said presser. c

39. In a paper can machine, the combinaa rotary table provided with a series of spaced mandrels, means to secure end closures to can bodies on said mandrels, and

mechanism for rotating said table step by step to successively bring said mandrels into operative relation with said means and to lock the table after each step forward movement, said mechanism comprising a series of studs carried by the table and spaced to correspond to the spacing of the mandrels, and a continuously rotating barrel cam for driving said table having a spiral groove and an end face constructed and arranged to cooperate with said studs to advance and lock the table step by step.

40. In combination, a rotary table, a concentric series of uniformly spaced mandrels on said tables, means to cooperate with said mandrels in succession in performing container making operations, and mechanism for rotating said table stepby step and locking. the same for a period after each forward step, said mechanism embodying a concentric series of spacedparallel rollers carried by studs fixed to the table, and a continuously rotating cam having a spiral groove to successively receive and advance said rollers a step and an end face to successively engage said rollers and lock the table against forward movement after each ste JOSEPH T. BOND. 

